Jock itch is caused by fungal infections and can be completely cured, as the fungi in this area generally do not penetrate too deeply and mostly adhere to the surface of the skin. Common antifungal creams can effectively treat this disease, but there is a certain likelihood of recurrence. Recurrence is mostly due to re-exposure to fungi and reinfection, such as frequent visits to public baths for soaking and swimming, and mixing washcloths and towels. Some patients have athlete's foot, and mixing socks with underwear during washing can also cause repeated cross-infection. Therefore, during treatment, it is necessary to regulate diet and living habits, and underwear, socks, sheets, and duvet covers must be thoroughly sun-dried and disinfected to avoid visiting public baths and swimming, thereby preventing cross-infection.